Meteor Crater, Arizona

Barringer Crater (Meteor Crater), Arizona, is a well-preserved simple impact crater approximately 1.2 km (0.75 miles) in diameter and 180 m (590 ft) deep, with a rim rising 30-60 m above the surrounding Colorado Plateau desert. Located about 37 miles east of Flagstaff and 18 miles west of Winslow, it serves as a premier example of hypervelocity impact processes on Earth.

History and Discovery

Indigenous peoples, including the Hopi and Navajo, knew the site for centuries. The Hopi referred to it with terms like Yuvugbu or yuvukpu ("cave-in" or "sink"), and the Navajo ‘Adah Hosh ‘ani ("many cacti descending from a height"). They gathered silica from the site for ceremonies, used the rim for eagle nests, and left flint tools and ruined dwellings nearby. Early 20th-century accounts mention Native legends of a "falling star" forming the crater, though some scholars debate the authenticity versus possible later embellishments.

In the late 19th and early 20th century, it was known as Coon Mountain or Coon Butte. Mining engineer Daniel Moreau Barringer championed its meteoritic origin from 1903 onward, driven by hopes of economic iron deposits. Extensive drilling and mining (to 1,400 ft) found no large mass but provided key evidence. The site is now a major tourist attraction with an on-site museum and was used to train Apollo astronauts.

Scientific Studies, Evidence, Impact Features, and Alternative Theories

The crater formed when a nickel-iron meteorite (Canyon Diablo, Group IAB) roughly 30-50 m in diameter struck at 12-20 km/s (most recent models favor 12.8 km/s), releasing energy equivalent to 10 megatons of TNT. Roughly half the impactor vaporized or fragmented; the rest dispersed as meteoritic iron. Within a Biblical young-Earth timeline, this event occurred in the post-Flood era, after the global Flood and the stabilization of the Earth’s seasons and climate (Genesis 8:22), likely within the last several thousand years.

Key impact features include a classic simple crater morphology: bowl-shaped depression with a raised rim of uplifted and overturned bedrock strata showing inverse stratigraphy (deeper Moenkopi, Kaibab, Toroweap, and especially Coconino formations now atop the rim). An ejecta blanket extends 1-2 km outward with hummocky deposits, and a central breccia lens fills the crater floor from fallback material. The crater has a slightly squared outline due to pre-existing regional joints in the target rocks.

Shocked quartz and shock metamorphism provide definitive evidence of hypervelocity impact. The Coconino Sandstone (eolian quartz arenite) exhibits extreme shock effects, including planar deformation features (PDFs), high-pressure silica polymorphs coesite and stishovite, and lechatelierite (fused silica glass).

Discovery of these features:

• Coesite was the breakthrough. In 1960, Eugene M. Shoemaker, Edward C. T. Chao, and B. M. Madsen identified coesite in shocked Coconino Sandstone samples (the first natural occurrence of this mineral, stable above 2-3 GPa). It was found in pore spaces and as polycrystalline aggregates in moderately shocked rocks.

• Stishovite (requiring 10 GPa or more) was reported in 1962 by Chao and colleagues from the same site, occurring in trace amounts (less than 1% by weight) in highly shocked sandstone, often alongside coesite and glass.

• Planar deformation features (PDFs) in quartz grains (narrow, parallel lamellae in multiple crystallographic sets) were rigorously documented in the 1960s through optical microscopy and later TEM. They form at 5-35 GPa via amorphization or twinning and are abundant in ejecta and rim materials.

• Lechatelierite (pure silica glass) appears as frothy, vesicular material from complete melting of quartz (above 1,700-2,000°C) in the highest-shock zones, often containing remnant shocked quartz with PDFs.

  
  

S.W. Kieffer’s 1971 seminal study (Shock Metamorphism of the Coconino Sandstone at Meteor Crater, Arizona, Journal of Geophysical Research) provided the definitive classification. She divided samples into five classes based on decreasing quartz content and increasing shock intensity, using quantitative X-ray diffraction for coesite (up to about one-third by weight in some rocks) and stishovite. Porosity played a key role: collapsing pores created localized hot spots, leading to heterogeneous energy deposition. Progressive stages show fracturing and PDFs (low shock), coesite in symplectitic grain boundaries or opaque regions (moderate), stishovite inversion to glass or coesite (high), and vesicular lechatelierite (very high). This work explained how porous sandstone amplifies shock effects and remains a foundational reference.

The "sand blow" or "hydrofountain" theory for Barringer Crater lacks scientific support and is not a prominent alternative explanation in the literature. It appears to draw from ideas like liquefaction features (sand blows or sand volcanoes from seismic activity), mud volcanoes, or hydrothermal or steam explosions, none of which match the crater's characteristics.

Why it is not a sand blow or hydrofountain

Sand blows (or sand volcanoes) form via earthquake-induced liquefaction: saturated sand loses strength, and pressurized water or sediment erupts upward, creating small, conical features typically meters to tens of meters across with layered sand deposits and no deep excavation. Hydrofountains or related features (for example, mud volcanoes or hydrothermal explosions) involve pressurized fluids or steam from below, often tied to volcanism or faulting, producing smaller craters with hydrothermal alteration, mineral deposits, or volcanic materials.

Key discrediting evidence for Barringer Crater:

• Scale and morphology: The crater is 1.2 km wide and 180 m deep, with a raised rim of uplifted and overturned bedrock strata (inverse stratigraphy: deeper rocks on top of the rim). Sand blows are tiny by comparison and lack such structural uplift or overturned beds.

• Absence of volcanic or hydrothermal indicators: No igneous rocks, hydrothermal alteration, or steam-related minerals exist. Early volcanic steam explosion theories (for example, by G.K. Gilbert) were disproven by the lack of these features and the presence of meteoritic material intimately mixed with ejecta.

• Shock metamorphism and high-pressure minerals: These features are impossible for fluid-driven processes. They include planar deformation features (PDFs) in quartz grains, high-pressure silica polymorphs coesite and stishovite (formed at pressures greater than 2-3 GPa, far beyond seismic or hydrothermal conditions; first identified at the crater by Shoemaker et al. in the 1960s), and lechatelierite (fused silica glass) requiring temperatures above 1,700-2,000°C.

• Meteoritic evidence: Thousands of Canyon Diablo iron meteorite fragments (nickel-iron) are scattered around the site, mixed randomly with ejecta. Some oxidized "shale balls" are present. No such material associates with sand blows.

• Ejecta blanket and breccia: Widespread overturned ejecta contains shocked and melted rock; a central breccia lens comes from fallback. Numerical modeling and comparisons to nuclear explosions match hypervelocity impact, not fluid eruption.

• Age and context: The crater formed in the post-Flood era in a stable desert environment; no evidence exists of recent major seismicity or volcanism capable of producing such a feature at this site by non-impact means.

Early debates focused on volcanic steam explosions (pre-impact acceptance), but Barringer's work, Shoemaker's shock studies, and modern analyses (for example, Kieffer 1971 on Coconino sandstone) firmly established the impact origin. No credible peer-reviewed support exists for a sand blow or hydrofountain model here.

Explanation of the fine silica sand ("silica flour") 

The "fine silica sand" throughout the crater and ejecta refers to vast quantities (millions of tons) of pulverized Coconino Sandstone, often called silica flour or rock flour. This white, powdery material is so fine that 55% or more passes through a 200-mesh screen, and individual grains can be rubbed to dust between fingers with no grit.

Formation mechanism (impact-specific):

The Coconino Sandstone (eolian quartz arenite), the main target rock, was subjected to the hypervelocity impact (12-20 km/s). This generated a powerful shock wave propagating ahead of the projectile. The shock fractured and comminuted (pulverized) quartz grains at the grain scale without significant melting in lower-shock zones. Higher-shock zones produced lechatelierite (fused glass) and high-pressure polymorphs. The process involved extreme, short-duration pressures (greater than 10 GPa in places) that shattered grains along weaknesses, creating "rock flour." This material was ejected, mixed into the rim and ejecta, and deposited in the crater fill.

Key studies:

• Barringer and Tilghman (early 1900s) noted it during drilling and mining and used it as evidence against volcanic origins (steam explosions could not produce such uniform pulverization or fuse pure silica).

• S.W. Kieffer (1971) detailed shock stages in Coconino samples, showing progressive grain fracturing, comminution, and melting.

• Later work (for example, USGS and Shoemaker studies) confirmed the features via microscopy, electron microprobe, and comparisons to laboratory shocks and nuclear tests. Some deposits were mined commercially after Barringer's time.

This pulverization is diagnostic of impacts (seen at other confirmed craters) and incompatible with gradual or fluid-driven processes, which sort sediments or produce rounded grains rather than angular, shattered flour.

In summary, the evidence overwhelmingly supports a meteorite impact. Alternative fluid-eruption models fail to explain the shock features, meteoritic debris, structural geology, or scale. The fine silica is a direct product of the impact shock wave acting on quartz sandstone.

Proximity and distribution of meteorite fragments: Tens of thousands of Canyon Diablo iron meteorite fragments (total recovered mass 30+ tons) are scattered around the crater, with abundance increasing toward the crater. Larger fragments occur on the plains; smaller, shocked shrapnel and metallic spheroids (from vapor) cluster near and within the ejecta.

Aerial (atmospheric) effects versus physical contact: The meteorite fragmented and ablated during entry but retained sufficient mass and velocity for direct hypervelocity surface impact and penetration. This produced a true excavation crater with shocked bedrock (unlike pure airbursts such as Tunguska). Modeling shows bow-shock interactions and rapid energy transfer upon contact.

Timeline Within a Biblical Framework

Within a young-Earth creation timeline (Creation several thousand years ago, global Flood roughly 4,300-5,000 years ago), the Barringer impact occurred firmly in the post-Flood era. Pre-Flood or syn-Flood impacts would likely have been erased or buried by the massive sedimentation, tectonics, and erosion of the Flood. Its excellent preservation aligns with post-Flood stabilization and the establishment of the current order of nature (Genesis 8:22).

Theological Implications in the Rahab Model

The Rahab model (see my discssion series, Meteorites: Echoes of the Fall) interprets biblical "Rahab" passages (Psalms, Job, Isaiah) as referencing a pre-Flood planet catastrophically disrupted, whose debris triggered impacts and contributed to Flood mechanisms ("fountains of the great deep," Genesis 7:11).

• Two-episode cratering: Early minor impacts post-Creation or Fall; a major swarm near Flood time from Rahab’s destruction.

• Flood "reset": Massive waters and sedimentation erased most craters; post-Flood Earth allowed rare, sharp examples like Barringer to form from any lingering debris.

• Barringer’s role: It exemplifies preserved post-Flood activity, witnessing God’s sovereign control over cosmic order after judgment (Colossians 1:17). The crater’s silica flour, shocked quartz (PDFs, coesite, stishovite), lechatelierite, and meteoritic evidence underscore the power of catastrophic processes under divine providence, pointing toward future renewal (Revelation 21).

  
  

This framework harmonizes literal Genesis with observable geology, viewing impacts as instruments in creation, curse, judgment, and stabilization.

Connections to Native American Traditions, Implications, and Effects

Local tribes held deep connections to the site for practical and ceremonial uses. The dramatic formation event (whether remembered in oral traditions as a falling star or integrated into broader sky or land narratives) reinforced indigenous worldviews linking celestial and terrestrial realms. Modern observances, such as Indigenous Peoples’ Day events at the crater, celebrate these ties.

Broader implications: The impact devastated local Pleistocene ecology (creating a temporary lake, scattering iron, altering landscapes) yet preserved remarkably in the arid climate. Scientifically, culturally, and theologically, Barringer Crater bridges empirical evidence, indigenous knowledge, and biblical interpretation. It highlights themes of catastrophe, resilience, divine sovereignty, and humanity’s place within a dynamic creation. Ongoing research continues to yield insights into planetary defense, solar system history, and interdisciplinary dialogue.